GB
30
Overheating
The air curtain unit with electric heater is
equipped with an overheat protector. If it is
deployed due to overheating, reset as follows:
1. Disconnect the electricity with the fully
isolated switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and
rectify the fault.
4. Connect the air curtain again.
All motors are equipped with an integral
thermal safety cut-out. This will operate,
stopping the air curtain should the motor
temperature rise too high. The cut-out
will automatically reset when the motor
temperature has returned to within the
motor’s operating limits.
Temperature control
Temperature control of SIRe maintains the
exhaust temperature. If the temperature
should exceed anyway the overheating
alarm goes off. For more information see the
manual for SIRe.
Fan replacement
1. Determine which of the fans is not
functioning.
2. Disconnect the cables to the relevant fan.
3. Remove the screws securing the fan and lift
the fan out.
4. Install the new fan as above in reverse
order.
Replacing the water coil (W)
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water
coil.
3. Remove the mounting screws securing the
coil in the unit and lift the coil out.
4. Install the new coil in reverse order to the
above.
Draining the water coil (W)
The drain valve is on the underside of the
coil. It can be accessed via the service hatch.
Trouble shooting
If the fans are not working or do not blow properly,
check the following:
• That the intake grille/filter is not dirty.
• Functions and settings of the SIRe control
system , see manual for SIRe.
If there is no heat, check the following:
• Functions and settings of the SIRe control
system, see manual for SIRe.
For units with electrical heating, also check the fol-
lowing:
• Power supply to electric heater coil; check
fuses and circuit-breaker (if any).
• That the overheat protection for the
motors has not been deployed.
For units with water coil, also check the following:
• That the water coil is air free.
• That there is enough water flow.
• That incoming water is heated enough.
If the fault cannot be rectified, please contact
a qualified service technician.
Replacing heating elements/heating
package (E)
1. Mark and disconnect the cables to the
heating elements/package
2. Remove the mounting screws securing the
heating elements/package in the unit and
lift the heaging elements/package out.
3. Install the new heating elements/package in
reverse order to the above.
All units:
Since fan motors and other components
are maintenance free, no maintenance
other than cleaning is necessary. The level
of cleaning can vary depending on local
conditions. Undertake cleaning at least twice
a year. Inlet and exhaust grilles, impeller
and elements can be vacuum cleaned or
wiped using a damp cloth. Use a brush when
vacuuming to prevent damaging sensitive
parts. Avoid the use of strong alkaline or
acidic cleaning agents.
